GMC 2005 Automobile User Manual


 
Your vehicle’s TPM system can alert you about a low
tire pressure condition but it does not replace normal tire
maintenance. See Tire Inspection and Rotation on
page 5-74 and Tires on page 5-62.
Notice: Do not use a tire sealant if your vehicle is
equipped with Tire Pressure Monitors. The liquid
sealant can damage the tire pressure monitor
sensors.
TPM Sensor Identification Codes
Each TPM sensor has a unique identification code. Any
time you rotate your vehicle’s tires or replace one or
more of the TPM sensors, the identification codes
will need to be matched to the new tire/wheel position.
Each tire/wheel position is matched to a sensor, by
increasing or decreasing the tire’s air pressure.
The sensors are matched to the tire/wheel positions in
the following order: left front (LF), right front (RF),
right rear (RR) and left rear (LR).
You will have one minute to match the first tire/wheel
position, and five minutes overall to match all
four tire/wheel positions. If it takes longer than one
minute, to match the first tire and wheel, or more than
five minutes to match all four tire and wheel positions
the matching process stops and you will need to
start over.
The TPM sensor matching process is outlined below:
1. Set the Parking brake.
2. Turn the ignition switch to RUN with the engine off.
3. Turn the exterior lamp switch from “Off” to “On”
four times within 3 seconds. A double horn chirp
will sound and the TPM low tire warning light
will begin to flash. The double horn chirp and
flashing TPM warning light indicate that the TPM
matching process has started. The TPM warning
light should continue flashing throughout the
matching procedure. The SERVICE TIRE
MONITOR message will be displayed on the Driver
Information Center (DIC).
4. Start with the left (driver’s side) front tire.
5. Remove the valve cap from the valve cap stem.
Activate the TPM sensor by increasing or
decreasing the tire’s air pressure for 10 seconds,
then stop and listen for a single horn chirp.
The single horn chirp should sound within
15 seconds, confirming that the sensor identification
code has been matched to this tire and wheel
position. If you do not hear the confirming single
horn chirp, you will need to start over with step
number one. To let air-pressure out of a tire you can
use the pointy end of the valve cap, a pencil-style
air pressure gage or a key.
5-72